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← TechnologyWhich signal attenuation results when atmospheric temperature inversion refracts a microwave antenna signal intended beyond visual range?
A)Multipath fading interference✓
B)Ionospheric scattering enhancement
C)Tropospheric ducting gain
D)Fresnel zone clearance reduction
💡 Explanation
Multipath fading occurs because temperature inversion causes radio waves to bend, leading to multiple signal paths. Therefore, the signals interfere destructively at the receiver, rather than add constructively or maintain linear transmission unaffected by environmental change.
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